Leo Benedictus investigated this fully six years ago, grappling with the "comic wrestling violence" in Nacho Libre and the "frequent jousting" of A Knight's Tale. And Kira Cochrane recently went down to the British Board of Film Classification HQ – next month we'll have a full report of her findings.

But your thoughts, please, on injury detail or any new qualifications we've missed recently. And which ones need inventing … ?